Rotary linear reciprocating motion device

Abstract

The present invention relates to a rotary linear reciprocating motion device and an applicator including the device. The rotary linear reciprocating motion device of the present invention is characterized in that it includes: a driving part, which is rotationally driven by a motor; a rotating part, which is provided on one surface of the driving part and transmits the rotational force of the above-mentioned driving part to the applicator; and a reciprocating part, which is provided on the other surface of the driving part and converts the rotational force of the above-mentioned driving part into linear reciprocating motion and transmits it to the above-mentioned applicator. The above-mentioned driving part includes: a driving disk, the above-mentioned rotating part and the above-mentioned reciprocating part are provided on both sides of the driving disk respectively; and a driving belt, which is provided on the edge of the above-mentioned driving disk, contacts the motor shaft of the above-mentioned motor and transmits the driving force of the above-mentioned motor to the above-mentioned driving disk through friction.

Description

Technical Field

[0001] The present invention relates to a rotary linear reciprocating motion device, and more particularly to a rotary linear reciprocating motion device that causes an applicator to perform both rotary and linear reciprocating motions, thereby enabling cosmetics to be applied to an object in a fine and uniform manner without accumulation. Background Art

[0002] Generally, people apply cosmetics to their skin using various applicators in order to make themselves look healthy and beautiful.

[0003] As a type of applicator, mascara is used to make eyelashes appear longer and darker.

[0004] As such mascaras, there are manual mascaras in which the user directly rotates a brush to apply makeup to the eyelashes.

[0005] In the case of conventional manual mascaras, if the user is not experienced in eyelash makeup, it is not only difficult to curl the lashes, but also difficult to curl the lashes upwards, making it difficult to create beautiful lashes. In addition, the unfamiliar motion of rotating the brush to comb the lashes makes it difficult to apply the mascara evenly, resulting in accumulation of lashes.

[0006] In order to solve the above-mentioned problems of manual mascara, electric mascara has been developed and used.

[0007] In the case of conventional electric mascara, the brush is rotated by an electric motor, so anyone can easily draw beautiful eyelashes.

[0008] However, in conventional electric mascaras, the brush is merely rotated by an electric motor or a speed reducer motor, which causes the mascara to lean toward one side of the eyelashes or accumulate.

[0009] At the same time, it has been difficult to apply mascara delicately to the left and right sides of the eyelashes, so the brush needs to be moved left and right to apply mascara to the eyelashes, which is troublesome.

[0010] Furthermore, conventional electric mascaras rotate their brushes independently of external pressure. Therefore, when external pressure such as contact with the skin occurs, the electric motor is overloaded, causing problems such as damage to the electric module or the applicator. Summary of the Invention

[0011] Problems to be solved by the invention

[0012] The present invention has been developed to solve the problems of the prior art as described above. An object of the present invention is to provide a rotary linear reciprocating motion device and an applicator including the same: the applicator is caused to perform both rotary and linear reciprocating motions, thereby applying cosmetics to an object in a delicate and uniform manner without accumulation.

[0013] In addition, an object of the present invention is to provide a rotary linear reciprocating motion device and an applicator including the device as follows: when an external pressure exceeding a certain pressure is applied to the applicator that simultaneously realizes the rotation function and the reciprocating function, the motor is caused to idle, thereby preventing the motor from being damaged by overload or the applicator from being damaged.

[0014] In addition, the present invention aims to provide a rotary linear reciprocating motion device and an applicator including the same, wherein the applicator has a two-stage brush structure, wherein the two brush-rods perform inward rotational motion while simultaneously performing linear reciprocating motion in the same direction or in different directions, thereby applying cosmetics in a deposited state to the object to be applied more finely and evenly.

[0015] Means for solving problems

[0016] The rotary linear reciprocating motion device of one aspect of the present invention is characterized in that it includes: a driving part, which is rotationally driven by a motor; a rotating part, which is provided on one surface of the driving part and transmits the rotational force of the above-mentioned driving part to the applicator; and a reciprocating part, which is provided on the other surface of the driving part and converts the rotational force of the above-mentioned driving part into a linear reciprocating motion and transmits it to the above-mentioned applicator, and the above-mentioned driving part includes: a driving disk, on both sides of which the above-mentioned rotating part and the above-mentioned reciprocating part are respectively provided; and a driving belt, which is provided on the edge of the above-mentioned driving disk, contacts the motor shaft of the above-mentioned motor and transmits the driving force of the above-mentioned motor to the above-mentioned driving disk through friction force.

[0017] Specifically, the driving belt is made of a rubber-like elastic material and can be detached from the driving disc.

[0018] Specifically, when an external pressure exceeding a certain pressure is applied to the applicator that simultaneously realizes the rotation function and the reciprocating function, the motor shaft rotates idly on the drive belt.

[0019] Specifically, the applicator is a single-section brush structure that simultaneously realizes rotational motion and linear reciprocating motion through the rotating portion and the reciprocating portion. The applicator includes: a brush-rod connected to the rotating portion; and a brush coupled to the end of the brush-rod.

[0020] Specifically, the rotating part includes: a worm shaft, which is provided on one surface of the driving disk and rotates together with the driving disk; a worm gear, which is coupled to the worm of the worm shaft and rotates; a first spur gear, which is connected in the direction of the rotation axis on one side of the worm gear; and a second spur gear, which is coupled to the first spur gear and is arranged on the same line as the brush-rod; and a drive shaft, which is provided on one side of the second spur gear and coupled to the brush-rod to transmit rotational motion force and linear reciprocating motion force.

[0021] Specifically, the reciprocating portion includes: an eccentric cam, which is provided on the other surface of the driving disk and rotates together with the driving disk; an elliptical ring, which performs linear reciprocating motion through the rotation of the eccentric cam; a connector-rod, which is connected to the elliptical ring and extends toward the brush-rod side; and a coupling component, which is connected to the connector-rod and is rotatably connected to the driving shaft to transmit the linear reciprocating motion force to the driving shaft.

[0022] Specifically, the second spur gear is not restricted in the X-axis direction and can move, and can slide within the meshing range with the first spur gear through the linear reciprocating motion of the coupling member while achieving rotational motion through the first spur gear.

[0023] Specifically, the applicator is a two-section brush structure that simultaneously realizes rotational motion and linear reciprocating motion through the rotating part and the reciprocating part. The applicator includes: a first brush-rod and a second brush-rod, which are connected to the rotating part and are adjacently arranged side by side; and a first brush and a second brush, which are respectively coupled to the respective ends of the first brush-rod and the second brush-rod.

[0024] Specifically, the above-mentioned rotating part includes: a worm shaft, which is provided on one surface of the above-mentioned driving disk and rotates together with the above-mentioned driving disk; a first worm gear and a second worm gear, which are respectively combined with the gears on both sides of the worm of the above-mentioned worm shaft and rotate; a first inner spur gear and a second inner spur gear, which are connected in the direction of the rotation axis on one side of the above-mentioned first worm gear and the second worm gear; a first outer spur gear and a second outer spur gear, which are respectively gear-coupled with the above-mentioned first inner spur gear and the second inner spur gear, and are respectively arranged on the same line as the above-mentioned first brush-rod and the second brush-rod; and a first driving shaft and a second driving shaft, which are respectively provided on one side of the above-mentioned first outer spur gear and the second outer spur gear and are respectively combined with the above-mentioned first brush-rod and the second brush-rod to transmit rotational motion force and linear reciprocating motion force.

[0025] Specifically, the reciprocating portion includes: an eccentric cam, which is provided on the other surface of the driving disk and rotates together with the driving disk; an elliptical ring, which performs a linear reciprocating motion through the rotation of the eccentric cam; a connector-rod, which is connected to the elliptical ring and extends toward the first brush-rod side; a first coupling component, which is connected to the connector-rod and is rotatably connected to the first drive shaft to transmit the linear reciprocating motion force to the first drive shaft; a second coupling component, which is rotatably connected to the second drive shaft to transmit the linear reciprocating motion force to the second drive shaft; and a connecting rod, which is hingedly connected to the first coupling component and the second coupling component respectively, and transmits the linear reciprocating motion force of the first coupling component to the second coupling component.

[0026] Specifically, the first outer spur gear and the second outer spur gear are not restricted in the X-axis direction, respectively, so that they can move, and can slide through the linear reciprocating motion of the first coupling component and the second coupling component within the meshing range between the first inner spur gear and the second inner spur gear while rotating through the first inner spur gear and the second inner spur gear.

[0027] Specifically, the first brush bar and the second brush bar rotate inwardly, respectively, and perform linear reciprocating motion in directions different from each other via the connecting rod.

[0028] Specifically, the reciprocating portion includes: an eccentric cam, which is provided on the other surface of the drive disk and rotates together with the drive disk; an elliptical ring, which performs a linear reciprocating motion through the rotation of the eccentric cam; a first connector-rod and a second connector-rod, which are respectively connected to the two sides of the elliptical ring and extend toward the first brush-rod and the second brush-rod sides respectively; and a common coupling component, which connects the first connector-rod and the second connector-rod, so that the first drive shaft and the second drive shaft can respectively pass through and be coupled thereto in a rotatable manner, and transmits a linear reciprocating motion force to the first drive shaft and the second drive shaft.

[0029] Specifically, the first outer spur gear and the second outer spur gear are not restricted in the X-axis direction, so they can move, and can slide through the linear reciprocating motion of the above-mentioned common connecting component within the meshing range between the first inner spur gear and the second inner spur gear while rotating through the first inner spur gear and the second inner spur gear.

[0030] Specifically, the first brush-bar and the second brush-bar rotate inwardly, respectively, and perform linear reciprocating motion in the same direction via the common coupling member.

[0031] Specifically, the reciprocating portion includes: two eccentric cams, which are provided on the other surface of the driving disk and rotate together with the driving disk, and are composed of a lower eccentric cam and an upper eccentric cam; a first elliptical ring, which performs a linear reciprocating motion through the rotation of the lower eccentric cam; a second elliptical ring, which performs a linear reciprocating motion at the upper part of the first elliptical ring through the rotation of the upper eccentric cam; a first connector-rod, which is connected to the first elliptical ring and extends toward the first brush-rod side; a second connector-rod, which is connected to the second elliptical ring and extends toward the second brush-rod side; a first coupling component, which is connected to the first connector-rod for rotatably penetrating and coupling with the first drive shaft to transmit a linear reciprocating motion force to the first drive shaft; and a second coupling component, which is connected to the second connector-rod for rotatably penetrating and coupling with the second drive shaft to transmit a linear reciprocating motion force to the second drive shaft.

[0032] Specifically, the first outer spur gear and the second outer spur gear are not restricted in the X-axis direction, respectively, so that they can move, and can slide through the linear reciprocating motion of the first coupling component and the second coupling component within the meshing range between the first inner spur gear and the second inner spur gear while realizing rotational motion through the first inner spur gear and the second inner spur gear.

[0033] Specifically, the above-mentioned two-stage eccentric cam is constructed in a manner that the above-mentioned lower eccentric cam and the above-mentioned upper eccentric cam have a phase difference of 180 degrees from each other, and the above-mentioned first brush-rod and the second brush-rod respectively rotate inward and perform linear reciprocating motion in different directions from each other through the above-mentioned two-stage eccentric cam with a phase difference of 180 degrees.

[0034] Specifically, the above-mentioned two eccentric cams are constructed in a manner that the above-mentioned lower eccentric cam and the above-mentioned upper eccentric cam have the same phase difference with each other, and the above-mentioned first brush-rod and the second brush-rod rotate inward respectively, and perform linear reciprocating motion in the same direction with each other through the above-mentioned two eccentric cams with the same phase difference.

[0035] Another aspect of the present invention provides an applicator, characterized in that it includes the above-mentioned rotary linear reciprocating motion device.

[0036] Effects of the Invention

[0037] In the rotary linear reciprocating motion device and the applicator including the device of the present invention, when an external pressure exceeding a certain pressure is applied to the applicator during the rotational motion and the linear reciprocating motion, the motor is caused to idle, thereby preventing damage to the motor or the applicator due to overload.

[0038] In addition, in the rotary linear reciprocating motion device and the applicator including the device of the present invention, when the applicator has a single-stage brush structure, a single brush-rod performs linear reciprocating motion while performing rotational motion, thereby enabling cosmetics to be applied to the object in a delicate and uniform manner without accumulation.

[0039] In addition, in the rotary linear reciprocating motion device and the applicator including the device of the present invention, when the applicator has a two-stage brush structure, the two brush-rods perform inward rotational motion while performing linear reciprocating motion in the same direction as each other or in different directions, thereby achieving various functions of combing, pushing, pulling, and kneading while gently pressing the two brushes against the object, thereby enabling cosmetics to be applied to the object more finely and evenly without accumulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 This is a perspective view of an applicator to which the rotary linear reciprocating motion device according to the first embodiment of the present invention is applied.

[0041] Figure 2 This is a partially exploded perspective view of an applicator to which the rotary linear reciprocating motion device according to the first embodiment of the present invention is applied.

[0042] Figure 3 This is an exploded front view of an applicator to which the rotary linear reciprocating motion device according to the first embodiment of the present invention is applied.

[0043] Figure 4 This is an exploded back view of an applicator to which the rotary linear reciprocating motion device according to the first embodiment of the present invention is applied.

[0044] Figure 5 and Figure 6 This is a diagram for explaining a drive module of the rotary linear reciprocating motion device according to the first embodiment of the present invention.

[0045] Figure 7 (a) and (b) are partial perspective views for explaining a rotary linear reciprocating motion device of an applicator according to a second embodiment of the present invention.

[0046] Figure 8 (a) and (b) are used to Figure 7 FIG1 is a diagram illustrating another embodiment of a driving module.

[0047] Figure 9 (a) and (b) are used to Figure 7 FIG. 2 is a diagram illustrating another embodiment of a driving module. DETAILED DESCRIPTION

[0048] The objectives, specific advantages, and novel features of the present invention will be more clearly understood by referring to the following detailed description and preferred embodiments associated with the accompanying drawings. In this specification, when reference is made to the constituent elements of the various figures, identical constituent elements are assigned the same reference numerals whenever possible, even if they appear in different drawings. Furthermore, when describing the present invention, if a detailed description of a related known art is deemed to obscure the gist of the present invention, such detailed description will be omitted.

[0049] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0050] Figure 1 This is a perspective view of an applicator to which the rotary linear reciprocating motion device of the first embodiment of the present invention is applied. Figure 2 This is a partially exploded perspective view of an applicator to which the rotary linear reciprocating motion device of the first embodiment of the present invention is applied. Figure 3 This is an exploded front view of an applicator of a rotary linear reciprocating motion device according to a first embodiment of the present invention. Figure 4 This is an exploded back view of an applicator of a rotary linear reciprocating motion device according to the first embodiment of the present invention. Figure 5 and Figure 6 This is a diagram for explaining a drive module of the rotary linear reciprocating motion device according to the first embodiment of the present invention.

[0051] in addition, Figure 7 (a) and (b) are partial perspective views for explaining a rotary linear reciprocating motion device of an applicator according to a second embodiment of the present invention. Figure 8 (a) and (b) are used to Figure 7 Another embodiment of the driving module is described in FIG. Figure 9 (a) and (b) are used to Figure 7 Here, in the figure, another embodiment of the driving module is described. Figures 7 to 9 (a) is a diagram for explaining the driving portion and the reciprocating portion of the driving module, and (b) is a diagram for explaining the rotating portion of the driving module.

[0052] Next, various driving modules 100 and 200 of the first and second embodiments will be described with reference to the accompanying drawings. Figures 1 to 6 The driving module 100 of the first embodiment is configured as a structure in which the brush-rod 5 performs rotational motion and linear reciprocating motion in the case of a single-stage brush structure. Figure 7 and Figure 8The driving module 200 of the second embodiment is configured as a structure in which the first brush-rod 5a and the second brush-rod 5b perform linear reciprocating motion in different directions while performing inward rotational motion in the case of a two-stage brush structure. Figure 9 The driving module 200 of the second embodiment is configured such that, in the case of a two-stage brush structure, the first brush-bar 5a and the second brush-bar 5b perform linear reciprocating motion in the same direction while performing an inward rotational motion.

[0053] In addition, the following description uses the case where the applicator 1 to which the rotary linear reciprocating motion devices 10 and 20 of the first and second embodiments are applied is a mascara as an example. However, the applicator 1 is not limited to an electric mascara and also includes cases where different applicators are applied to the rotary linear reciprocating motion devices 10 and 20. In this embodiment, the applicator also includes an electric toothbrush, etc., to which the rotary linear reciprocating motion devices 10 and 20 are applied.

[0054] Reference Figures 1 to 6 The rotary linear reciprocating motion device 10 of the first embodiment of the present invention can be applied to the applicator 1. In this embodiment, when the applicator 1 is a mascara, the mascara brush can be a single-stage brush structure.

[0055] The applicator 1 includes a first housing 2 accommodating a rotary linear reciprocating motion device 10 , a second housing 3 , and a bracket 4 , a brush rod 5 , and a brush 6 coupled to the rotary linear reciprocating motion device 10 .

[0056] The first housing 2 has a space for accommodating the driving module 100 and the motor 101 , and includes a driving module accommodating portion 21 and a motor accommodating portion 22 .

[0057] The driving module storage portion 21 is provided at the front portion of the first housing 2 and can store and secure the driving module 100 .

[0058] The motor housing portion 22 is provided in the middle portion of the first housing 2 and can house and secure the motor 101 .

[0059] A connecting pipe 23 extending forward a certain length is provided at the front end of the first housing 2. The connecting pipe 23 is inserted into the driving shaft 125 of the driving module 100 and guides the driving shaft 125 to perform rotational and linear reciprocating motion without shaking.

[0060] The second housing 3 has a space for accommodating the driving module 100 and the battery 102 , and includes a driving module cover 31 and a battery accommodating portion 32 .

[0061] The driving module cover 31 has a space in a portion facing the driving module housing portion 21 of the first housing 2 , and covers and seals the driving module 100 housed in the driving module housing portion 21 .

[0062] The battery storage portion 32 is provided at the rear of the driving module cover 31 and can store and secure the battery 102 .

[0063] The battery storage portion 32 is an externally exposed storage portion having a lower surface formed between the battery 102 and the motor 101 , so as to facilitate replacement of the battery 102 and minimize the influence of heat generated by the motor 101 .

[0064] The first housing 2 and the second housing 3 are coupled to each other, a circuit board 104 is provided inside, and a switch 103 exposed to the outside is mounted thereon.

[0065] The first housing 2 and the second housing 3 thus combined are further provided with a housing body that houses the first housing 2 and the second housing 3 and exposes only the switch 103 to the outside.

[0066] The bracket 4 connects the drive shaft 125 of the drive module 100 and the brush rod 5 of the applicator 1. In the case where one end of the brush rod 5 is directly connected to the drive shaft 125, the bracket 4 can be omitted.

[0067] The brush-bar 5 receives rotational motion and linear reciprocating motion from the drive shaft 125 of the drive module 100 through the bracket 4 , thereby causing the brush 6 to rotate and reciprocate linearly.

[0068] Brush 6 is detachably attached to the end of brush-stem 5. Brush 6, as the portion that comes into direct contact with an object, rotates while simultaneously performing a linear reciprocating motion, thereby applying cosmetic liquid to the object. Here, if applicator 1 is an electric mascara, the object is eyelashes. If the applicator is an electric toothbrush, the object can be teeth, but the present invention is not limited thereto.

[0069] Next, the rotary linear reciprocating motion device 10 applied to the applicator 1 will be described in detail.

[0070] like Figures 1 to 6 As shown, the rotary linear reciprocating motion device 10 of this embodiment can be mounted with various applicators 1 and can make the mounted applicators 1 perform a rotary motion and a linear reciprocating motion at the same time.

[0071] The rotary linear reciprocating motion device 10 includes a drive module 100, which causes the applicator 1 to perform rotational motion and linear reciprocating motion at the same time. The rotary linear reciprocating motion device 10 also includes, as a basic structure: a motor 101, which has a motor shaft 1011 that provides driving force to such a drive module 100; a battery 102, which supplies power to the motor 101; a switch 103, which controls the drive module 100; and a circuit board 104.

[0072] The switch 103 and the circuit substrate 104 serve as structural components for controlling the drive module 100, turning the drive module 100 on / off, and realizing speed adjustment and various functions in the rotational motion and linear reciprocating motion modes. Such functional structure is well known, so the specific description of its function is omitted in this embodiment.

[0073] The driving module 100 includes a driving unit 110 , a rotating unit 120 , and a reciprocating unit 130 , which are provided in the first housing 2 and the second housing 3 and cause the applicator 1 to perform both rotational motion and linear reciprocating motion.

[0074] The driving unit 110 is rotationally driven by the driving force of the motor 101 and transmits the rotational force to the rotating unit 120 and the reciprocating unit 130. The driving unit 110 includes a driving disk 111 and a driving belt 112.

[0075] The driving disk 111 is provided with a rotating portion 120 and a reciprocating portion 130 on both sides thereof, and is formed in a disk shape.

[0076] The driving belt 112 is disposed on an edge of the driving disk 111 and contacts the motor shaft 1011 of the motor 101 to transmit the driving force of the motor 101 to the driving disk 111 through friction.

[0077] Such a driving belt 112 is made of a rubber-like elastic material and can be attached to and detached from the driving disc 111 .

[0078] The drive unit 110 is configured such that the motor shaft 1011 is not coupled to the drive belt 112. Instead, the motor shaft 1011 and the drive belt 112 contact each other on their surfaces, causing the drive disk 111 to rotate through friction. Consequently, when external pressure exceeding a certain pressure is applied to the brush-bar 5 or brush 6 of the applicator 1, which simultaneously performs both rotational and reciprocating functions, the external pressure causes the drive disk 111 to stop rotating. At this point, the motor shaft 1011 idles on the drive belt 112. Thus, even if external pressure exceeding a certain pressure is applied to the brush-bar 5 or brush 6, thereby overloading the motor 101, the overload is relieved by the idle rotation of the motor shaft 1011.

[0079] The rotating unit 120 is provided on one surface of the driving unit 110 and transmits the rotational force of the driving unit 110 to the applicator 1 to rotate the applicator 1. The rotating unit 120 includes a worm shaft 121, a worm gear 122, a first spur gear 123, a second spur gear 124, and a driving shaft 125.

[0080] The worm shaft 121 is provided on one surface of the drive disk 111 and rotates together with the drive disk 111. The worm shaft 121 is arranged at the center of the drive disk 111. The worm shaft 121 may be a shaft formed by directly cutting a worm from the outer surface, or a shaft formed by inserting a separately manufactured worm into the shaft.

[0081] The worm gear 122 is gear-coupled to the worm of the worm shaft 121 to rotate.

[0082] The first spur gear 123 is connected to one side of the worm gear 122 in the direction of the rotation axis. The first spur gear 123 transmits the rotational force of the worm gear 122 to the second spur gear 124.

[0083] The second spur gear 124 is gear-coupled with the first spur gear 123 and is provided on the same line as the brush bar 5. The second spur gear 124 transmits the rotational force of the first spur gear 123 to the drive shaft 125.

[0084] The second spur gear 124 is not restricted in the X-axis direction and can move. While rotating via the first spur gear 123, it can also slide within the gear meshing range with the first spur gear 123 through the linear reciprocating motion of the coupling member 134 (described later). Thus, even if the second spur gear 124 moves in the axial direction via the reciprocating portion 130, the rotational motion can be transmitted to the brush-bar.

[0085] The drive shaft 125 is provided on one side of the second spur gear 124 and is coupled to the brush bar 5. The drive shaft 125 transmits not only the rotational motion force achieved by the second spur gear 124 to the brush bar 5, but also the linear reciprocating motion force achieved by the reciprocating portion 130 described later to the brush bar 5.

[0086] In the above, the rotational force of the drive disk 111 transmitted through the worm shaft 121 changes the axis of the rotational motion to the normal direction of the worm shaft 121 through the worm gear 122, thereby transmitting the rotational motion to the brush-bar 5 through the first spur gear 123 and the second spur gear 124.

[0087] The reciprocating unit 130 is provided on the other side of the driving unit 110 and converts the rotational force of the driving unit 110 into linear reciprocating motion and transmits it to the applicator 1, thereby causing the applicator 1 to reciprocate linearly. The reciprocating unit 130 includes an eccentric cam 131, an elliptical ring 132, a connector-rod 133, and a coupling member 134.

[0088] The eccentric cam 131 is provided on the other side of the drive plate 111 and rotates together with the drive plate 111. The central axis of the eccentric cam 131 is arranged at the center of the drive plate 111 and the cam is eccentric. Thus, the elliptical ring 132 converts the rotational force transmitted from the eccentric cam 131 into linear reciprocating motion.

[0089] The elliptical ring 132 converts the rotational force transmitted from the eccentric cam 131 into a linear reciprocating motion.

[0090] The elliptical ring 132 includes an elliptical groove having a width corresponding to the radius of the track and a width corresponding to the diameter of the track when the eccentric cam 131 rotates.

[0091] The eccentric cam 131 rotates along the inner peripheral surface of the elliptical groove, and the elliptical ring 132 performs linear reciprocating motion.

[0092] The connector rod 133 is connected to the oval ring 132 and extends toward the brush rod 5 . The connector rod 133 transmits the linear reciprocating motion of the oval ring 132 to the coupling member 134 .

[0093] The coupling member 134 is connected to the connector-rod 133 , is rotatably coupled to the drive shaft 125 , and transmits a linear reciprocating motion force to the drive shaft 125 .

[0094] Figure 7 (a) and (b) are partial perspective views for explaining a rotary linear reciprocating motion device of an applicator according to a second embodiment of the present invention.

[0095] Reference Figure 7 (a) and (b), the rotary linear reciprocating motion device 20 of the second embodiment of the present invention is applicable to the applicator 1. In this embodiment, when the applicator 1 is a mascara, the mascara brush may be a two-stage brush structure.

[0096] The applicator 1 has a structure that is the same as or similar to that of the first embodiment described above.

[0097] That is, the applicator 1 of this embodiment is not shown in the figure. Figures 1 to 6While the structural components of the applicator 1 described above are the first housing 2 and the second housing 3, the applicator 1 may include a housing having the same structure as the first housing 2 and the second housing 3 but a different size (in the present embodiment, a two-stage brush structure is used, as opposed to a single-stage brush structure, resulting in a larger housing size than in the first embodiment), or a housing having a different structure that can accommodate the rotary linear reciprocating motion device 20 of this embodiment. Furthermore, the applicator 1 of this embodiment differs in that the structural components of the applicator 1 (single-stage brush structure), namely the bracket 4, the brush rod 5, and the brush 6, which are coupled to the rotary linear reciprocating motion device 10 of the first embodiment, are changed to a two-stage brush structure in this embodiment, including a first bracket 4a, a second bracket 4b, a first brush rod 5a, a second brush rod 5b, a first brush 6a, and a second brush 6b.

[0098] The first bracket 4 a connects the first drive shaft 228 of the drive module 200 a to the first brush-rod 5 a of the applicator 1 .

[0099] The second bracket 4 b connects the second drive shaft 229 of the drive module 200 a to the second brush-rod 5 b of the applicator 1 .

[0100] When one end portion of each of the first brush bar 5a and the second brush bar 5b is directly connected to the first drive shaft 228 and the second drive shaft 229, the first bracket 4a and the second bracket 4b may be omitted.

[0101] The first brush-bar 5a receives rotational force and linear reciprocating force from the first drive shaft 228 of the drive module 200a via the first bracket 4a, thereby rotating and linearly reciprocating the first brush 6a.

[0102] The second brush-bar 5b receives rotational force and linear reciprocating force from the second drive shaft 229 of the drive module 200a via the second bracket 4b, thereby rotating and linearly reciprocating the second brush 6b.

[0103] The first brush-bar 5a and the second brush-bar 5b are arranged adjacent to each other and in parallel.

[0104] The first brush 6a is detachably coupled to the end of the first brush-bar 5a.

[0105] The second brush 6b is detachably coupled to the end of the second brush-bar 5b.

[0106] The first brush 6a and the second brush 6b are the parts that come into direct contact with the object, and they rotate while performing a linear reciprocating motion to apply the cosmetic liquid to the object. Here, if the applicator 1 is an electric mascara, the object is the eyelashes. If the applicator 1 is an electric toothbrush instead of an electric mascara, the object can be a tooth, but is not limited thereto.

[0107] Next, the rotary linear reciprocating motion device 20 applied to the applicator 1 will be described in detail.

[0108] like Figure 7 As shown in (a) and (b), the rotary linear reciprocating motion device 20 of this embodiment can be mounted with various applicators 1, so that the mounted applicator 1 performs a rotary motion and a linear reciprocating motion at the same time.

[0109] The rotary-linear reciprocating motion device 20 includes a drive module 200a, which causes the applicator 1 to perform both rotational and linear reciprocating motion. Although not shown, as described in the first embodiment, the drive module 200a includes the same or similar components as the following: a motor 101 having a motor shaft 1011; a battery 102 for supplying power to the motor 101; a switch 103 for controlling the drive module 200a; and a circuit board 104. Therefore, the following description will focus on the drive module 200a, which is a different structure from the first embodiment.

[0110] The driving module 200a includes a driving unit 210, a rotating unit 220, and a reciprocating unit 230 provided in a housing (not shown) similar to the first housing 2 and the second housing 3 of the first embodiment, and causes the two-stage brush structure applicator 1 to rotate and reciprocate linearly.

[0111] The driving unit 210 is driven to rotate by a driving force of a motor (not shown) that is the same as or similar to the motor 101 of the first embodiment, and transmits the rotational force to the rotating unit 220 and the reciprocating unit 230. The driving unit 210 includes a driving disk 211 and a driving belt 212.

[0112] The driving disk 211 is provided with a rotating portion 220 and a reciprocating portion 230 on both sides thereof, and can be formed into a disk shape.

[0113] The drive belt 212 is provided at the edge of the drive disk 211 and contacts a motor shaft (not shown) that is the same as or similar to the motor shaft 1011 of the first embodiment, thereby transmitting the driving force of the motor to the drive disk 211 through friction.

[0114] Such a driving belt 212 is made of a rubber-like elastic material and can be attached to and detached from the driving disk 211 .

[0115] In the aforementioned drive unit 210, the motor shaft is not coupled to the drive belt 212, but rather contacts the surface of the drive belt 212, thereby rotating the drive disk 211 through friction. Consequently, when external pressure exceeding a certain pressure is applied to at least one of the first brush-rod 5a and the second brush-rod 5b, or at least one of the first brush 6a and the second brush 6b, of the applicator 1, which simultaneously performs both rotational and reciprocating functions, the external pressure stops the rotation of the drive disk 211. At this point, the motor shaft idles on the drive belt 212. Thus, even if external pressure exceeding a certain pressure is applied to the first brush-rod 5a and the second brush-rod 5b, or the first brush 6a and the second brush 6b, thereby applying an excessive load to the motor, the excessive load is eliminated by the idle rotation of the motor shaft.

[0116] The rotating unit 220 is provided on one surface of the driving unit 210 and transmits the rotational force of the driving unit 210 to the applicator 1, thereby causing the applicator 1 to rotate. The rotating unit 220 includes a worm shaft 221, a first worm gear 222, a second worm gear 223, a first inner spur gear 224, a second inner spur gear 225, a first outer spur gear 226, a second outer spur gear 227, a first drive shaft 228, and a second drive shaft 229.

[0117] The worm shaft 221 is provided on one surface of the drive disk 211 and rotates together with the drive disk 211. The worm shaft 221 is arranged at the center of the drive disk 211. The worm shaft 221 can be a shaft formed by directly stripping a worm from the outer surface, or a shaft formed by inserting a separately manufactured worm into the shaft.

[0118] The first worm gears 222 are gear-coupled to the worm side of the worm shaft 221 and rotate.

[0119] The second worm gear 223 is gear-coupled to the other side of the worm of the worm shaft 221 and rotates.

[0120] The first worm gear 222 and the second worm gear 223 rotate inward on both sides of the worm of the worm shaft 221 .

[0121] The first inner spur gear 224 is connected to one side of the first worm gear 222 in the direction of the rotation axis. The first inner spur gear 224 transmits the rotational force of the first worm gear 222 to the first outer spur gear 226.

[0122] The second inner spur gear 225 is connected to one side of the second worm gear 223 in the direction of the rotation axis. The second inner spur gear 225 transmits the rotational force of the second worm gear 223 to the second outer spur gear 227.

[0123] The first outer spur gear 226 is gear-coupled with the first inner spur gear 224 and is provided on the same line as the first brush-bar 5 a . The first outer spur gear 226 transmits the rotational force of the first inner spur gear 224 to the first drive shaft 228 .

[0124] The second outer spur gear 227 is gear-coupled with the second inner spur gear 225 and is provided on the same line as the second brush-bar 5 b . The second outer spur gear 227 transmits the rotational force of the second inner spur gear 225 to the second drive shaft 229 .

[0125] The first outer spur gear 226 and the second outer spur gear 227 are not restricted in the X-axis direction and can move. They are slid by the linear reciprocating motion of the first coupling member 234a and the second coupling member 234b described below within the gear meshing range between the first inner spur gear 224 and the second inner spur gear 225 while rotating. Thus, even if the first outer spur gear 226 and the second outer spur gear 227 move in the axial direction via the reciprocating portion 230, their rotational motion can be transmitted to the first brush-bar 5a and the second brush-bar 5b, respectively.

[0126] The first drive shaft 228 is provided on one side of the first outer spur gear 226 and is coupled to the first brush-bar 5a. The first drive shaft 228 transmits the rotational force generated by the first outer spur gear 226 and the linear reciprocating force generated by the reciprocating portion 230 described below to the first brush-bar 5a.

[0127] The second drive shaft 229 is provided on one side of the second outer spur gear 227 and is coupled to the second brush-bar 5b. The second drive shaft 229 transmits the rotational force generated by the second outer spur gear 227 and the linear reciprocating force generated by the reciprocating portion 230 described later to the second brush-bar 5b.

[0128] In the above, the rotational force of the drive disk 211 transmitted to the worm shaft 221 changes the axis of the rotational motion to the normal direction of the worm shaft 221 through the first worm gear 222 and the second worm gear 223, thereby transmitting the rotational motion to the first brush-rod 5a through the first inner spur gear 224 and the first outer spur gear, and transmitting the rotational motion to the second brush-rod 5b through the second inner spur gear 225 and the second outer spur gear.

[0129] The reciprocating portion 230 is provided on the other side of the driving portion 210 and converts the rotational force of the driving portion 210 into linear reciprocating motion and transmits it to the applicator 1, thereby causing the applicator 1 to reciprocate linearly. The reciprocating portion 230 includes an eccentric cam 231, an elliptical ring 232, a connector-rod 233, a first coupling member 234a, a second coupling member 234b, and a connecting rod 235.

[0130] The eccentric cam 231 is provided on the other side of the drive plate 211 and rotates together with the drive plate 211. The central axis of the eccentric cam 231 is arranged at the center of the drive plate 211 and the cam is eccentric. Thus, the elliptical ring 232 converts the rotational force transmitted from the eccentric cam 231 into linear reciprocating motion.

[0131] The elliptical ring 232 converts the rotational force transmitted from the eccentric cam 231 into a linear reciprocating motion.

[0132] The elliptical ring 232 includes an elliptical groove having a width corresponding to the radius of the track and a width corresponding to the diameter of the track when the eccentric cam 231 rotates.

[0133] The eccentric cam 231 rotates along the inner peripheral surface of the elliptical groove, and the elliptical ring 232 performs linear reciprocating motion.

[0134] The connector rod 233 is connected to the oval ring 232 and extends toward the first brush rod 5a. The connector rod 233 transmits the linear reciprocating motion of the oval ring 232 to the first coupling member 234a.

[0135] The first coupling member 234 a is connected to the connector-rod 233 , and is rotatably coupled to the first drive shaft 228 , thereby transmitting a linear reciprocating force to the first drive shaft 228 .

[0136] The second coupling member 234 b is rotatably coupled to the second drive shaft 229 , receives the linear reciprocating force of the first coupling member 234 a via the link 235 , and transmits the linear reciprocating force to the second drive shaft 229 .

[0137] The connecting rod 235 is hingedly connected to the first connecting member 234a and the second connecting member 234b, respectively, and transmits the linear reciprocating force of the first connecting member 234a to the second connecting member 234b.

[0138] As described above, in the case of a two-stage brush structure, the driving module 200a of this embodiment causes the first brush-rod 5a and the second brush-rod 5b to perform an inward rotational motion through the rotating portion 220, and performs a linear reciprocating motion in different directions in relation to the connecting rod 235 hingedly connected to the first connecting component 234a and the second connecting component 234b.

[0139] Figure 8 (a) and (b) are correct. Figure 7 FIG1 is a diagram illustrating another embodiment of a driving module.

[0140] like Figure 8 As shown in (a) and (b), the driving module 200b of another embodiment is the same as the above reference Figure 7 The driving module 200a described in (a) and (b) is different, and the structure of the rotary linear reciprocating motion device 20 is the same or similar. Therefore, in order to avoid repeated description, the driving module 200b of another embodiment different from the above-mentioned driving module 200a and the resulting different structure are mainly described here.

[0141] In addition, the driving module 200b of another embodiment, like the above-mentioned driving module 200a, includes a driving portion 210, a rotating portion 220, and a reciprocating portion 230, which are arranged in a shell (not shown) similar to the first shell 2 and the second shell 3 of the first embodiment, and cause the applicator 1 with a two-stage brush structure to perform rotational motion and linear reciprocating motion at the same time. In the case of the driving portion 210 and the rotating portion 220, they are the same as or similar to the above-mentioned driving module 200a, and only the reciprocating portion 230 is different. Therefore, in order to avoid repeated explanation, the different structure, namely the reciprocating portion 230 and the resulting different structure, will be mainly explained here.

[0142] In another embodiment, the reciprocating portion 230 is disposed on the other side of the driving portion 210. It converts the rotational force of the driving portion 210 into linear reciprocating motion and transmits it to the applicator 1, causing the applicator 1 to reciprocate linearly. The reciprocating portion 230 includes an eccentric cam 231, an elliptical ring 232, a first connector-rod 233a, a second connector-rod 233b, and a common coupling member 234c.

[0143] The eccentric cam 231 is provided on the other side of the drive plate 211 and rotates together with the drive plate 211. The eccentric cam 231 is eccentric and has its central axis located at the center of the drive plate 211. The elliptical ring 232 converts the rotational force transmitted from the eccentric cam 231 into linear reciprocating motion.

[0144] The elliptical ring 232 converts the rotational force transmitted from the eccentric cam 231 into a linear reciprocating motion.

[0145] The elliptical ring 232 includes an elliptical groove having a width corresponding to the radius of the track and a width corresponding to the diameter of the track when the eccentric cam 231 rotates.

[0146] As the eccentric cam 231 rotates along the inner peripheral surface of the elliptical groove, the elliptical ring 232 performs linear reciprocating motion.

[0147] The first connector-rod 233a is connected to one side of the oval ring 232 and extends toward the first brush-rod 5a. The first connector-rod 233a transmits the linear reciprocating motion of the oval ring 232 to the first coupling member 234a.

[0148] The second connector-rod 233b is connected to the other side of the oval ring 232 and extends toward the second brush-rod 5b. The second connector-rod 233b transmits the linear reciprocating motion of the oval ring 232 to the second coupling member 234b.

[0149] The common coupling component 234c connects the first connector-rod 233a and the second connector-rod 233b, allowing the first drive shaft 228 and the second drive shaft 229 to rotatably penetrate and couple therewith, and transmits linear reciprocating motion force to the first drive shaft 228 and the second drive shaft 229.

[0150] As in the driving module 200b of another embodiment constructed as described above, in the case of a two-stage brush structure, the first brush-rod 5a and the second brush-rod 5b are caused to perform an inward rotational motion through the rotating portion 220, and are caused to perform linear reciprocating motions in the same direction as each other through the common connecting component 234c that connects the first connector-rod 233a, the second connector-rod 233b and the first drive shaft 228 and the second drive shaft 229.

[0151] Figure 9 (a) and (b) are correct. Figure 7 FIG. 2 is a diagram illustrating another embodiment of a driving module.

[0152] like Figure 9 As shown in (a) and (b), the driving module 200c of another embodiment is similar to the above reference Figure 7 The driving module 200a described in (a) and (b) is different, and the structure of the rotary linear reciprocating motion device 20 is the same or similar. Therefore, in order to avoid repeated description, the driving module 200c of another embodiment different from the above-mentioned driving module 200a and the resulting different structure are mainly described here.

[0153] In addition, the driving module 200c of another embodiment is similar to the above-mentioned driving module 200a, and includes a driving part 210, a rotating part 220, and a reciprocating part 230 that are arranged in a shell (not shown) similar to the first shell 2 and the second shell 3 of the first embodiment, so that the applicator 1 with a two-stage brush structure performs a rotational motion and a linear reciprocating motion. In the case of the driving part 210 and the rotating part 220, they are the same as or similar to the above-mentioned driving module 200a, and only the reciprocating part 230 is different. Therefore, in order to avoid repeated explanation here, the different structure, namely the reciprocating part 230 and the resulting different structure are mainly explained.

[0154] In another embodiment, the reciprocating portion 230 is provided on the other side of the driving portion 210. It converts the rotational force of the driving portion 210 into linear reciprocating motion and transmits it to the applicator 1, thereby causing the applicator 1 to reciprocate linearly. The reciprocating portion 230 includes a two-stage eccentric cam 231a, a first elliptical ring 232a, a second elliptical ring 232b, a first connector-rod 233a, a second connector-rod 233b, a first coupling member 234a, and a second coupling member 234b.

[0155] The two-stage eccentric cam 231 a is provided on the other surface of the driving disk 211 and rotates together with the driving disk 211 , and is composed of a lower eccentric cam and an upper eccentric cam.

[0156] The central axes of the lower and upper eccentric cams constituting the two-stage eccentric cam 231a are arranged at the center of the drive plate 211 and are eccentric in the same or different directions. Thus, the first elliptical ring 232a converts the rotational force transmitted from the lower eccentric cam constituting the two-stage eccentric cam 231a into linear reciprocating motion, and the second elliptical ring 232b converts the rotational force transmitted from the upper eccentric cam constituting the two-stage eccentric cam 231a into linear reciprocating motion.

[0157] In this embodiment, the lower and upper eccentric cams forming the two-stage eccentric cam 231a are configured with a phase difference of 180 degrees. In this case, the first brush-bar 5a and the second brush-bar 5b rotate inward, respectively, and are then linearly reciprocated in different directions by the two-stage eccentric cam 231a with a phase difference of 180 degrees.

[0158] In this embodiment, the lower and upper eccentric cams forming the two-stage eccentric cam 231a are configured to have the same phase difference. In this case, the first brush-bar 5a and the second brush-bar 5b rotate inward, and the two-stage eccentric cams 231a with the same phase difference cause them to reciprocate linearly in the same direction.

[0159] The first elliptical ring 232a converts the rotational force transmitted from the lower eccentric cam constituting the two-stage eccentric cam 231a into a linear reciprocating motion.

[0160] The second elliptical ring 232b converts the rotational force transmitted from the upper eccentric cam constituting the two-stage eccentric cam 231a on the upper portion of the first elliptical ring 232a into a linear reciprocating motion.

[0161] The first elliptical ring 232a and the second elliptical ring 232b respectively have elliptical grooves having widths corresponding to the radius and diameter of the track when the lower eccentric cam and the upper eccentric cam constituting the two-stage eccentric cam 231a respectively rotate.

[0162] As the two-stage eccentric cam 231 a rotates along the inner peripheral surface of the elliptical groove, the first and second elliptical rings 232 perform linear reciprocating motion.

[0163] The first connector-rod 233a is connected to one side of the first oval ring 232a and extends toward the first brush-rod 5a. The first connector-rod 233a transmits the linear reciprocating motion of the first oval ring 232a to the first coupling member 234a.

[0164] The second connector-rod 233b is connected to the other side of the second oval ring 232b and extends toward the second brush-rod 5b. The second connector-rod 233b transmits the linear reciprocating motion of the second oval ring 232b to the second coupling member 234b.

[0165] The first coupling member 234 a is connected to the first connector-rod 233 a , is rotatably coupled to the first drive shaft 228 , and transmits a linear reciprocating force to the first drive shaft 228 .

[0166] The second coupling member 234 b is connected to the second connector-rod 233 b , and is rotatably coupled to the second drive shaft 229 , thereby transmitting a linear reciprocating force to the second drive shaft 229 .

[0167] In the driving module 200c of another embodiment constructed as described above, in the case of a two-stage brush structure, the first brush-rod 5a and the second brush-rod 5b perform an inward rotational motion through the rotating portion 220 and perform a linear reciprocating motion in the same direction (with the same phase difference) or in different directions (with a phase difference of 180 degrees) with the first connector-rod 233a and the second connector-rod 233b that independently move through the two-stage eccentric cam 231a, depending on the phase difference between the lower eccentric cam and the upper eccentric cam constituting the two-stage eccentric cam 231a.

[0168] Thus, in this embodiment, when external pressure exceeding a certain pressure is applied to the applicator 1 during rotational motion and linear reciprocating motion, the motor 101 will idle, thereby preventing damage to the motor 101 or the applicator 1 due to overload.

[0169] In this embodiment, when the applicator 1 has a single-stage brush structure, the brush-rod 5 performs a rotational motion while also performing a linear reciprocating motion, thereby being able to apply the cosmetics finely and evenly to the object to be applied without accumulation.

[0170] In addition, in this embodiment, when the applicator 1 has a two-stage brush structure, the two brush-rods 5a and 5b perform inward rotational motion while performing linear reciprocating motion in the same direction or in different directions. As a result, the two brushes 6a and 6b can perform various functions of combing, pushing, pulling, and kneading while gently pressing the object, thereby enabling cosmetics to be applied to the object more delicately and evenly without accumulation.

[0171] The present invention has been described above primarily with reference to its embodiments. However, this is for illustrative purposes only and is not intended to limit the present invention to these embodiments. Persons skilled in the art may implement various combinations, modifications, and applications not illustrated in the embodiments without departing from the essential technical content of the embodiments. Therefore, the technical content regarding modifications and applications that can be readily derived from the embodiments of the present invention is encompassed by the present invention.

[0172] (Explanation of Symbols)

[0173] 1: Applicator 2: First shell

[0174] 21: Drive module storage section 22: Motor storage section

[0175] 23: Connecting pipe 3: Second shell

[0176] 31: Driving module cover 32: Battery storage

[0177] 4: Bracket 4a: First bracket

[0178] 4b: 2nd bracket 5: brush-rod

[0179] 5a: 1st brush-rod 5b: 2nd brush-rod

[0180] 6: Brush 6a: 1st brush

[0181] 6b: Second brush 10: Rotary linear reciprocating motion device

[0182] 101: Motor 1011: Motor shaft

[0183] 102: Battery 103: Switch

[0184] 104: Circuit board 100: Driving module

[0185] 110: Driving unit 111: Driving disk

[0186] 112: Drive belt 120: Rotating part

[0187] 121: Worm shaft 122: Worm gear

[0188] 123: 1st spur gear 124: 2nd spur gear

[0189] 125: Drive shaft 130: Reciprocating portion

[0190] 131: Eccentric cam 132: Oval ring

[0191] 133: Connector-rod 134: Connecting component

[0192] 20: Rotary linear reciprocating motion device 200a, 200b, 200c: Drive module

[0193] 210: Driving unit 211: Driving disk

[0194] 212: Drive belt 220: Rotating part

[0195] 221: Worm shaft 222: First worm gear

[0196] 223: 2nd worm gear 224: 1st inner spur gear

[0197] 225: Second inner spur gear 226: First outer spur gear

[0198] 227: Second outer spur gear 228: First drive shaft

[0199] 229: Second drive shaft 230: Reciprocating portion

[0200] 231: Eccentric cam 231a: 2-stage eccentric cam

[0201] 232: Elliptical ring 232a: First elliptical ring

[0202] 232b: Second oval ring 233: Connector-rod

[0203] 233a: 1st connector-rod 233b: 2nd connector-rod

[0204] 234a: First coupling member 234b: Second coupling member

[0205] 234c: Common joint component 235: Connecting rod

Claims

1. A rotary linear reciprocating motion device, characterized in that: It includes: A drive disc in the form of a disc; a drive belt provided on an edge of the drive disk and in contact with a motor shaft of the motor to rotate the drive disk by friction; a rotating portion disposed on the driving disk, wherein the applicator is rotated by the rotational force of the driving disk; and The reciprocating portion is disposed on the driving disk and converts the rotation of the driving disk to cause the applicator to perform a linear reciprocating motion. The rotating part and the reciprocating part are respectively arranged on two surfaces of the driving disk. When external pressure exceeding a certain pressure is applied to the applicator, the motor shaft rotates idly on the drive belt.

2. The rotary linear reciprocating motion device according to claim 1, characterized in that: The drive belt is made of a rubber-like elastic material and can be disassembled and assembled with respect to the above-mentioned drive disc.

3. The rotary linear reciprocating motion device according to claim 1, wherein: The applicator is a single-stage brush structure that simultaneously realizes rotational motion and linear reciprocating motion through the rotating portion and the reciprocating portion. The applicator mentioned above includes: a brush-rod connected to the rotating portion; and A brush is coupled to the end of the brush-rod.

4. The rotary linear reciprocating motion device according to claim 3, characterized in that: The rotating part includes: a worm shaft provided on one surface of the drive disc and rotating together with the drive disc; A worm gear, the gear of which is coupled to the worm of the worm shaft to rotate; a first spur gear connected to the worm gear in the direction of the rotation axis on one side; and a second spur gear coupled to the first spur gear and arranged on the same line as the brush-bar; and The drive shaft is provided on one side of the second spur gear and is coupled to the brush-rod to transmit rotational motion and linear reciprocating motion.

5. The rotary linear reciprocating motion device according to claim 4, characterized in that: The round trip section includes: an eccentric cam provided on the other surface of the driving disc and rotating together with the driving disc; an elliptical ring which performs a linear reciprocating motion by the rotation of the eccentric cam; A connector-rod connected to the oval ring and extending toward the brush-rod; and The coupling component is connected to the connector-rod and is rotatably connected to the drive shaft to transmit a linear reciprocating motion force to the drive shaft.

6. The rotary linear reciprocating motion device according to claim 5, characterized in that: The second spur gear is not restricted in the X-axis direction and can move, realizes rotational motion through the first spur gear, and can slide within the meshing range with the first spur gear through the linear reciprocating motion of the coupling member.

7. The rotary linear reciprocating motion device according to claim 1, wherein: The applicator is a two-stage brush structure that realizes rotational motion and linear reciprocating motion simultaneously through the rotating part and the reciprocating part. The applicator mentioned above includes: a first brush-bar and a second brush-bar, which are connected to the rotating portion and are arranged adjacent to each other; and The first brush and the second brush are respectively connected to the respective ends of the first brush rod and the second brush rod.

8. The rotary linear reciprocating motion device according to claim 7, wherein: The rotating part includes: a worm shaft provided on one surface of the drive disc and rotating together with the drive disc; a first worm gear and a second worm gear, which are respectively coupled to the gears on both sides of the worm of the worm shaft and rotate; a first inner spur gear and a second inner spur gear connected in the direction of the rotation axis on one side of each of the first worm gear and the second worm gear; and a first outer spur gear and a second outer spur gear, which are gear-coupled with the first inner spur gear and the second inner spur gear, respectively, and are arranged on the same line as the first brush-bar and the second brush-bar; and The first drive shaft and the second drive shaft are respectively arranged on one side of the above-mentioned first outer spur gear and the second outer spur gear and are respectively connected to the above-mentioned first brush-rod and the second brush-rod to transmit rotational motion force and linear reciprocating motion force.

9. The rotary linear reciprocating motion device according to claim 8, characterized in that: The round trip section includes: an eccentric cam provided on the other surface of the driving disc and rotating together with the driving disc; an elliptical ring which performs a linear reciprocating motion by the rotation of the eccentric cam; A connector-rod connected to the oval ring and extending toward the first brush-rod; a first coupling member connected to the connector-rod, for rotatably engaging the first drive shaft and transmitting a linear reciprocating motion force to the first drive shaft; a second coupling member, which is rotatably coupled to the second drive shaft and transmits a linear reciprocating motion to the second drive shaft; and The connecting rod is hinge-connected to the first connecting member and the second connecting member, respectively, and transmits the linear reciprocating motion force of the first connecting member to the second connecting member.

10. The rotary linear reciprocating motion device according to claim 9, wherein: The first outer spur gear and the second outer spur gear are not restricted in the X-axis direction, respectively, so that they can move, rotate through the first inner spur gear and the second inner spur gear, and slide within the meshing range between the first inner spur gear and the second inner spur gear through the linear reciprocating motion of the first coupling component and the second coupling component.

11. The rotary linear reciprocating motion device according to claim 9, wherein: The first brush bar and the second brush bar rotate inwardly and perform linear reciprocating motion in directions different from each other via the connecting rod.

12. The rotary linear reciprocating motion device according to claim 8, wherein: The round trip section includes: an eccentric cam provided on the other surface of the driving disc and rotating together with the driving disc; an elliptical ring which performs a linear reciprocating motion by the rotation of the eccentric cam; a first connector-rod and a second connector-rod, which are respectively connected to both sides of the oval ring and extend toward the first brush-rod and the second brush-rod, respectively; and The common coupling component connects the first connector-rod and the second connector-rod, allows the first drive shaft and the second drive shaft to rotatably penetrate and couple therewith, and transmits linear reciprocating motion force to the first drive shaft and the second drive shaft.

13. The rotary linear reciprocating motion device according to claim 12, wherein: The first outer spur gear and the second outer spur gear are each unrestricted in the X-axis direction, and can thus move, performing rotational motion through the first inner spur gear and the second inner spur gear, and can slide within the meshing range between the first inner spur gear and the second inner spur gear through the linear reciprocating motion of the common coupling component.

14. The rotary linear reciprocating motion device according to claim 12, wherein: The first brush-bar and the second brush-bar rotate inwardly, respectively, and perform linear reciprocating motion in the same direction as each other via the common coupling member.

15. The rotary linear reciprocating motion device according to claim 8, wherein: The round trip section includes: a two-stage eccentric cam, which is provided on the other side of the drive disc and rotates together with the drive disc, and is composed of a lower eccentric cam and an upper eccentric cam; a first elliptical ring which is caused to perform linear reciprocating motion by the rotation of the lower eccentric cam; a second elliptical ring, which is placed above the first elliptical ring and is driven to perform a linear reciprocating motion by the rotation of the upper eccentric cam; a first connector-rod connected to the first elliptical ring and extending toward the first brush-rod; a second connector-rod connected to the second elliptical ring and extending toward the second brush-rod; a first coupling member connected to the first connector-rod, for rotatably coupling with the first drive shaft and transmitting a linear reciprocating motion to the first drive shaft; and The second coupling member is connected to the second connector-rod and is rotatably coupled to the second drive shaft so as to transmit a linear reciprocating motion to the second drive shaft.

16. The rotary linear reciprocating motion device according to claim 15, wherein: The first outer spur gear and the second outer spur gear are not restricted in the X-axis direction, respectively, so that they can move, realize rotational motion through the first inner spur gear and the second inner spur gear, and at the same time, can slide within the meshing range between the first inner spur gear and the second inner spur gear through the linear reciprocating motion of the first coupling component and the second coupling component.

17. The rotary linear reciprocating motion device according to claim 15, wherein: The two-stage eccentric cam is configured such that the lower eccentric cam and the upper eccentric cam have a phase difference of 180 degrees. The first brush bar and the second brush bar rotate inwardly and perform linear reciprocating motions in different directions due to the two-stage eccentric cams having a phase difference of 180 degrees.

18. The rotary linear reciprocating motion device according to claim 15, wherein: The two-stage eccentric cam is configured such that the lower eccentric cam and the upper eccentric cam have the same phase difference with each other. The first brush-bar and the second brush-bar rotate inwardly, respectively, and are linearly reciprocated in the same direction by the two eccentric cams having the same phase difference.

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